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make: introduce $(CLEAN)

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Currently, some targets are serialized before "clean" by conditionally
adding a dependency.

Make does allow ordering using "|" syntax in prerequisites, but for
"clean" that would always trigger the clean target.
By only conditionally setting $(CLEAN) to clean, that can be
circumvented.

The new CLEAN allows any recipe to be run after "clean" by specifying "|
$(CLEAN)" as prerequisite.
This commit is contained in:
Kaspar Schleiser 2019-07-12 12:34:42 +02:00
parent 6b094a78a9
commit cb8e335c29
1 changed files with 7 additions and 0 deletions
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7
Makefile.include
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@ -80,6 +80,13 @@ MAKEOVERRIDES += $(foreach v,$(__DIRECTORY_VARIABLES),$(v)=$($(v)))
# trailing '/' is important when RIOTPROJECT == CURDIR
BUILDRELPATH ?= $(patsubst $(RIOTPROJECT)/%,%,$(CURDIR)/)
# Set CLEAN to "clean" if that target was requested.
# Allows recipes to be run after cleaning, without triggering it implicitly:
#
# all: | $(CLEAN)
#
CLEAN = $(filter clean, $(MAKECMDGOALS))
# include makefiles utils tools
include $(RIOTMAKE)/utils/variables.mk